Answer: Safety light grids are multi-beam photoelectric safety devices that are designed to immediately stop dangerous movement of a machine. Transmitter and receiver are set up in the access area of the danger area to stop the plant when the light beam is interrupted. This is implemented by a suitable safety relay and its relay contacts.

Answer: The level sensors of types KQ/KG/KI/ can detect levels through plastic walls. The sensor with the new ifm handling concept is adjusted so that the plastic wall is suppressed and the sensor reacts only to the medium behind it. In addition, residues of liquid can be suppressed with ‘full adjustment’.

Answer: The LMT level sensor is perfectly suited for the detection of viscous media, powders and media containing solids such as ketchup or vegetable oils. Its sanitary design ensures that it is ideal for the food industry and it has approvals to EHEDG /3A. The unit operates to the impedance spectroscopy method. It examines the electrical behaviour of the media to be monitored in the frequency range between 50 and 200 MHz. The various media show characteristic behaviour. The presetting of the unit allows detection of the presence of certain media; deposits or foam, however, are suppressed.

Answer: The PQ pressure sensor qualifies for this task thanks to its small compact design. The unit measures the precise pressure and underpressure in pneumatic applications with its silicon measuring cell. The measuring cell is insensitive to liquids such as condensation water and deposits.

Answer: The clearly visible scale features an LED ring, which has one LED per tick mark. This LED ring displays the adjusted set and reset points, alternatively it can be adjusted as trend display. The LED display indicates the current measured value. The user can select between different display units. In combination with the two touch fields, the alphanumeric display is also used for a menu-guided parameter setting of the unit. Thanks to its rotatable display, the manometer can also be mounted in difficult installation situations such as upside-down mounting.

Answer: The integrated end stop reliably protects the O-ring against excessive pressing. This excludes mounting errors caused by tightening the nut too much. The need for mounting by means of an expensive torque wrench that is difficult to handle is eliminated. The vibration protection of the nut is implemented using a saw tooth contour on the integrated metal sleeve. With this measure the connector is easy to mount and at the same time it protects the nut against unintended loosening, e.g. in cases of strong vibration in the installation.

Answer:
ifm offers a wide selection of accessories for installing and aligning sensors based on a clamp which is fastened using only a single screw. The sensors are kept securely in position, at the same time they can be moved freely in all axes. The clamps can be mounted on rods and bars, on surfaces and common industrial aluminium profiles.

A diffuse reflection sensor is used if a photoelectric sensor is to detect an object directly.

Retro-reflective sensors with polarisation filter are used for reflective objects. The polarisation filter enables reliable detection.

Through-beam sensors are the most reliable option for detection. If the installation position allows, the interruption of the light beam between transmitter and receiver ensures maximum reliability in operation.

Here, you will also find drivers for Windows 7 (32/64 bits). A new download is necessary to update the device drivers (DTM). If the FDT software is already installed, only the DTM will be updated. After installation the new device drivers have to be updated in the library. To do so, press the "Update " button in the device selection wizard.

Answer: A recurrent test as needed, for example, for mechanical contacts is not necessary because the sensor is self-monitoring. However, please note the maximum service life of the sensors. If the service life is exceeded, the probability of a dangerous failure is higher. For ifm fail-safe sensors the maximum service life therefore corresponds to the test interval.

Answer:
The safety relay G2001S has a "current sense" (= current monitoring). Therefore you need a minimum current consumption. The right resistance value can be 820 ohms to 10 k ohm. Apart from the usual muting lamps (24 V DC / 0.5 to 5 watt) it is also possible to use LED lights if the consumption corresponds to the mentioned values.